Broadcast Licenses, Goodwill and Other Intangible Assets (Details 3) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 16,320	$ 16,429
Accumulated Amortization	14,711	13,682
Net Amount	1,609	2,747
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,660	4,660
Accumulated Amortization	3,584	2,634
Net Amount	1,076	2,026
Non-competition agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,861	3,861
Accumulated Amortization	3,861	3,861
Net Amount	0	0
Favorable lease agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,965	5,965
Accumulated Amortization	5,539	5,504
Net Amount	426	461
Other intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,834	1,943
Accumulated Amortization	1,727	1,683
Net Amount	$ 107	$ 260